Dialing button for setting the temperature: The place the finger points to is the current temperature value. ON/OFF Switch for System: Press ON/OFF Key to turn on/off of the thermostat. Working Mode Switch: Press HEATCOOL key to switch the heating/Cooling mode. Fan Speed Key: L-M-H, that is, Low speed-Moddle speed-High speed, Wind valve controller does not have this fLJnction. MT01 series of thermostats are usually used on the commercial, industrial and civil constructi ons, which can control the fan l of air-conditioning, water valve and wind valveect. It can make the temperature balance in the setting range in the location, and all switches are manual switch. Very simple to manipulate. Colour: white Material: plastic Package Contents: 1 x Temperature regulator 1 x English manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: Please allow slight errors due to manual measurement. Please make sure you don't mind before bidding. Color may vary depending on your monitor, please understand. Note: Hello, please pay attention to your shipping address when purchasing products. If your delivery information (e.g. name, street, house number, doorbell/email without name, etc.) is incorrect, the order will not be delivered correctly